Não informado. (1948). Esso oilways international. Standard Oil Company of Brazil.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Esso Oilways International. Rio de Janeiro: Standard Oil Company of Brazil, 1948.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Esso Oilways International. Standard Oil Company of Brazil, 1948.
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